528 lines
16 KiB
Java
528 lines
16 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.jasper.compiler;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.util.StringTokenizer;
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import org.apache.jasper.Constants;
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import org.apache.jasper.JasperException;
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import org.apache.juli.logging.Log;
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import org.apache.juli.logging.LogFactory;
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import org.apache.tools.ant.BuildException;
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import org.apache.tools.ant.DefaultLogger;
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import org.apache.tools.ant.Project;
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import org.apache.tools.ant.taskdefs.Javac;
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import org.apache.tools.ant.types.Path;
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import org.apache.tools.ant.types.PatternSet;
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/**
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* Main JSP compiler class. This class uses Ant for compiling.
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*
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* @author Anil K. Vijendran
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* @author Mandar Raje
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* @author Pierre Delisle
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* @author Kin-man Chung
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* @author Remy Maucherat
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* @author Mark Roth
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*/
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public class AntCompiler extends Compiler {
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private final Log log = LogFactory.getLog(AntCompiler.class); // must not be static
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protected static final Object javacLock = new Object();
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static {
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System.setErr(new SystemLogHandler(System.err));
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}
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// ----------------------------------------------------- Instance Variables
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protected Project project = null;
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protected JasperAntLogger logger;
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// ------------------------------------------------------------ Constructor
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// Lazy eval - if we don't need to compile we probably don't need the project
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protected Project getProject() {
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if (project != null)
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return project;
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// Initializing project
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project = new Project();
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logger = new JasperAntLogger();
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logger.setOutputPrintStream(System.out);
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logger.setErrorPrintStream(System.err);
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logger.setMessageOutputLevel(Project.MSG_INFO);
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project.addBuildListener( logger);
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if (System.getProperty(Constants.CATALINA_HOME_PROP) != null) {
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project.setBasedir(System.getProperty(Constants.CATALINA_HOME_PROP));
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}
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if( options.getCompiler() != null ) {
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if( log.isDebugEnabled() )
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log.debug("Compiler " + options.getCompiler() );
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project.setProperty("build.compiler", options.getCompiler() );
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}
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project.init();
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return project;
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}
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public static class JasperAntLogger extends DefaultLogger {
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protected final StringBuilder reportBuf = new StringBuilder();
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@Override
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protected void printMessage(final String message,
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final PrintStream stream,
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final int priority) {
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}
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@Override
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protected void log(String message) {
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reportBuf.append(message);
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reportBuf.append(System.lineSeparator());
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}
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protected String getReport() {
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String report = reportBuf.toString();
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reportBuf.setLength(0);
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return report;
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}
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}
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// --------------------------------------------------------- Public Methods
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/**
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* Compile the servlet from .java file to .class file
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*/
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@Override
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protected void generateClass(String[] smap)
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throws FileNotFoundException, JasperException, Exception {
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long t1 = 0;
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if (log.isDebugEnabled()) {
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t1 = System.currentTimeMillis();
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}
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String javaEncoding = ctxt.getOptions().getJavaEncoding();
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String javaFileName = ctxt.getServletJavaFileName();
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String classpath = ctxt.getClassPath();
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StringBuilder errorReport = new StringBuilder();
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StringBuilder info=new StringBuilder();
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info.append("Compile: javaFileName=" + javaFileName + "\n" );
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info.append(" classpath=" + classpath + "\n" );
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// Start capturing the System.err output for this thread
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SystemLogHandler.setThread();
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// Initializing javac task
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getProject();
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Javac javac = (Javac) project.createTask("javac");
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// Initializing classpath
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Path path = new Path(project);
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path.setPath(System.getProperty("java.class.path"));
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info.append(" cp=" + System.getProperty("java.class.path") + "\n");
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StringTokenizer tokenizer = new StringTokenizer(classpath, File.pathSeparator);
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while (tokenizer.hasMoreElements()) {
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String pathElement = tokenizer.nextToken();
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File repository = new File(pathElement);
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path.setLocation(repository);
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info.append(" cp=" + repository + "\n");
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}
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if (log.isDebugEnabled()) {
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log.debug( "Using classpath: " + System.getProperty("java.class.path") +
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File.pathSeparator + classpath);
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}
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// Initializing sourcepath
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Path srcPath = new Path(project);
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srcPath.setLocation(options.getScratchDir());
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info.append(" work dir=" + options.getScratchDir() + "\n");
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// Initialize and set java extensions
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String exts = System.getProperty("java.ext.dirs");
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if (exts != null) {
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Path extdirs = new Path(project);
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extdirs.setPath(exts);
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javac.setExtdirs(extdirs);
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info.append(" extension dir=" + exts + "\n");
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}
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// Add endorsed directories if any are specified and we're forking
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// See Bugzilla 31257
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if(ctxt.getOptions().getFork()) {
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String endorsed = System.getProperty("java.endorsed.dirs");
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if(endorsed != null) {
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Javac.ImplementationSpecificArgument endorsedArg =
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javac.createCompilerArg();
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endorsedArg.setLine("-J-Djava.endorsed.dirs=" +
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quotePathList(endorsed));
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info.append(" endorsed dir=" + quotePathList(endorsed) +
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"\n");
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} else {
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info.append(" no endorsed dirs specified\n");
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}
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}
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// Configure the compiler object
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javac.setEncoding(javaEncoding);
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javac.setClasspath(path);
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javac.setDebug(ctxt.getOptions().getClassDebugInfo());
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javac.setSrcdir(srcPath);
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javac.setTempdir(options.getScratchDir());
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javac.setOptimize(! ctxt.getOptions().getClassDebugInfo() );
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javac.setFork(ctxt.getOptions().getFork());
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info.append(" srcDir=" + srcPath + "\n" );
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// Set the Java compiler to use
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if (options.getCompiler() != null) {
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javac.setCompiler(options.getCompiler());
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info.append(" compiler=" + options.getCompiler() + "\n");
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}
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if (options.getCompilerTargetVM() != null) {
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javac.setTarget(options.getCompilerTargetVM());
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info.append(" compilerTargetVM=" + options.getCompilerTargetVM() + "\n");
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}
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if (options.getCompilerSourceVM() != null) {
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javac.setSource(options.getCompilerSourceVM());
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info.append(" compilerSourceVM=" + options.getCompilerSourceVM() + "\n");
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}
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// Build includes path
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PatternSet.NameEntry includes = javac.createInclude();
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includes.setName(ctxt.getJavaPath());
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info.append(" include="+ ctxt.getJavaPath() + "\n" );
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BuildException be = null;
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try {
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if (ctxt.getOptions().getFork()) {
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javac.execute();
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} else {
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synchronized(javacLock) {
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javac.execute();
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}
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}
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} catch (BuildException e) {
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be = e;
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log.error(Localizer.getMessage("jsp.error.javac"), e);
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log.error(Localizer.getMessage("jsp.error.javac.env") + info.toString());
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}
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errorReport.append(logger.getReport());
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// Stop capturing the System.err output for this thread
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String errorCapture = SystemLogHandler.unsetThread();
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if (errorCapture != null) {
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errorReport.append(System.lineSeparator());
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errorReport.append(errorCapture);
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}
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if (!ctxt.keepGenerated()) {
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File javaFile = new File(javaFileName);
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if (!javaFile.delete()) {
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throw new JasperException(Localizer.getMessage(
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"jsp.warning.compiler.javafile.delete.fail", javaFile));
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}
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}
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if (be != null) {
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String errorReportString = errorReport.toString();
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log.error(Localizer.getMessage("jsp.error.compilation", javaFileName, errorReportString));
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JavacErrorDetail[] javacErrors = ErrorDispatcher.parseJavacErrors(
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errorReportString, javaFileName, pageNodes);
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if (javacErrors != null) {
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errDispatcher.javacError(javacErrors);
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} else {
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errDispatcher.javacError(errorReportString, be);
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}
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}
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if( log.isDebugEnabled() ) {
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long t2 = System.currentTimeMillis();
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log.debug("Compiled " + ctxt.getServletJavaFileName() + " "
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+ (t2-t1) + "ms");
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}
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logger = null;
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project = null;
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if (ctxt.isPrototypeMode()) {
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return;
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}
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// JSR45 Support
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if (! options.isSmapSuppressed()) {
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SmapUtil.installSmap(smap);
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}
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}
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private String quotePathList(String list) {
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StringBuilder result = new StringBuilder(list.length() + 10);
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StringTokenizer st = new StringTokenizer(list, File.pathSeparator);
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while (st.hasMoreTokens()) {
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String token = st.nextToken();
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if (token.indexOf(' ') == -1) {
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result.append(token);
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} else {
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result.append('\"');
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result.append(token);
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result.append('\"');
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}
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if (st.hasMoreTokens()) {
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result.append(File.pathSeparatorChar);
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}
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}
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return result.toString();
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}
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protected static class SystemLogHandler extends PrintStream {
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// ----------------------------------------------------------- Constructors
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/**
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* Construct the handler to capture the output of the given steam.
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* @param wrapped The wrapped stream
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*/
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public SystemLogHandler(PrintStream wrapped) {
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super(wrapped);
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this.wrapped = wrapped;
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}
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// ----------------------------------------------------- Instance Variables
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/**
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* Wrapped PrintStream.
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*/
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protected final PrintStream wrapped;
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/**
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* Thread <-> PrintStream associations.
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*/
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protected static final ThreadLocal<PrintStream> streams =
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new ThreadLocal<>();
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/**
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* Thread <-> ByteArrayOutputStream associations.
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*/
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protected static final ThreadLocal<ByteArrayOutputStream> data =
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new ThreadLocal<>();
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// --------------------------------------------------------- Public Methods
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/**
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* Start capturing thread's output.
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*/
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public static void setThread() {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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data.set(baos);
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streams.set(new PrintStream(baos));
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}
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/**
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* Stop capturing thread's output and return captured data as a String.
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* @return the captured output
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*/
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public static String unsetThread() {
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ByteArrayOutputStream baos = data.get();
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if (baos == null) {
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return null;
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}
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streams.set(null);
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data.set(null);
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return baos.toString();
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}
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// ------------------------------------------------------ Protected Methods
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/**
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* Find PrintStream to which the output must be written to.
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* @return the current stream
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*/
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protected PrintStream findStream() {
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PrintStream ps = streams.get();
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if (ps == null) {
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ps = wrapped;
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}
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return ps;
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}
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// ---------------------------------------------------- PrintStream Methods
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@Override
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public void flush() {
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findStream().flush();
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}
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@Override
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public void close() {
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findStream().close();
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}
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@Override
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public boolean checkError() {
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return findStream().checkError();
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}
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@Override
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protected void setError() {
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//findStream().setError();
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}
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@Override
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public void write(int b) {
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findStream().write(b);
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}
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@Override
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public void write(byte[] b)
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throws IOException {
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findStream().write(b);
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}
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@Override
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public void write(byte[] buf, int off, int len) {
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findStream().write(buf, off, len);
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}
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@Override
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public void print(boolean b) {
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findStream().print(b);
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}
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@Override
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public void print(char c) {
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findStream().print(c);
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}
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@Override
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public void print(int i) {
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findStream().print(i);
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}
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@Override
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public void print(long l) {
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findStream().print(l);
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}
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@Override
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public void print(float f) {
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findStream().print(f);
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}
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@Override
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public void print(double d) {
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findStream().print(d);
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}
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@Override
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public void print(char[] s) {
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findStream().print(s);
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}
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@Override
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public void print(String s) {
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findStream().print(s);
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}
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@Override
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public void print(Object obj) {
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findStream().print(obj);
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}
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@Override
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public void println() {
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findStream().println();
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}
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@Override
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public void println(boolean x) {
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findStream().println(x);
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}
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@Override
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public void println(char x) {
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findStream().println(x);
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}
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@Override
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public void println(int x) {
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findStream().println(x);
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}
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@Override
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public void println(long x) {
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findStream().println(x);
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}
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@Override
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public void println(float x) {
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findStream().println(x);
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}
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@Override
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public void println(double x) {
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findStream().println(x);
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}
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@Override
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public void println(char[] x) {
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findStream().println(x);
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}
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@Override
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public void println(String x) {
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findStream().println(x);
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}
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@Override
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public void println(Object x) {
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findStream().println(x);
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}
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}
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}
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